Driving mechanism



W. lVcELREE.

DRIVING MECHANISM.

' APPLICATION HLED Nov. 1, 1921.

1,431,168. Patented 0011.10, 1922,.

2 SHEETS-SHEET 2.

the engine and the bull wheels in the manner well known in the art. rlhe spring of the pedal thus tends to force the pedal along the link or rod 20. The link 20 is provided with a compression spring 22 and with a collar 23 against which the springl is pressed by the pressure exerted by the eye pin 2l which is secured to the shank of the pedal by the strap 24 and the bolt 25. lWhen the driving,- mechanism is in the position shown in Figure l the pedal 19 is held down and con sequently the clutch is released and thus the crank shaft of the engine may rotate without driving; the bull wheels and causing iorvfard movement of the tractor. rlhe lever 'll .is held in. this position by a releasable means that is operated by rearward movement of the lever.

il. lil-shaped bar 2G is pivoted at one end inv the frame 7. lt is spring-pressed by the spring 29 against a dog; 30. The spring Q9 is located on a rod 3l and between a nut or washer 32 and a laterally extending portion 33 of the lil-shaped bar 26. The rod 31 is secured to the frame 7. lt may be pivoted thereto to permit the slight angular movements of the U-shaped bar 26 relative to the frame 7. The dog` 30 is pivoted on the pin 34 which is also secured in the trame 7. lt is spring pressed by the spring; 35 and so as to press it against a stop 36 that may be formed on the end of the rod 3l. The lever ll is pivoted on the rod 37 and its upper end is pulled forward by the spring 33 which is connected to the lever and to the frame 7. Forward movement of the lever is prevented by the tumbler or lock 39 which is pivotally connected to the lever ll by means of the pin llt). llhe upper end of the tumbler 39 is connected by a spring 4l to the rod 37. -The U-shaped bar 26 is provided with the recesses 42 and 49. rlhe recess l-Q. the pivot pin Ll-O of the tumbler 39, and the pin le on which the U-shaped vbar 26 is pivoted, in the position shown are substantially in line and so that the pressure of the spring' 29 is sulicient to hold the U-shaped bar 26 against any downward pressure that may be exerted by reason oi? the spring` 38 acting through the lever ll and the tumbler 39. This holds the lever 1l in its position and holds the throttle lever l2 in closed position and the pedal 19 so as to hold the clutch in an open position.

ln order to start the tractor the lever ll. is pulled rearward against the tension of the spring 38 to unlock the lever. The lever is held in locked position not only by the spring 38 land the tumbler 39. but also by the do@` 30 since its pivot pin 34 is substantially in line with its engaging` point 45 and the pivot pin i6 ot' a trip or latch i7 where it held by the spring; 35 and the stop 36. The slight rearward movement resisted to a marked extent by the dog; 30. llpon a further slight *n'essure the point e5 oi" the dog slides into the hook e8 of the trip 47 and swings the hook of the trip Li7 upwards and thus permits the lever ll to swing further backD pushing;` the upper end of the dog Ll5 rearwardly and drawing the tumbler 39 from the recess l2 upon the portion 5l between the recesses l2 and a3, while at the same time the end 45 of the dog is locked within the hook i8 and lurtherbackward movement of the lever l1 is prevented. ll'ileantime the roller 50 enters the recess #.29 formed in the laterally extending` portion 33 oil the lil-shaped bar 26 and will be held there by the spring 29 imtwithstainlii the action oi the spring- 35. The upper end oit the lever ll is then permitted to be drawn :forward by the spring` 33 a short distance which causes the lower end ol the tumbler to more into the recess l2 and draws the latch 457 from over the end l5 of the dog 30. rifhe lever l is again pulled back to draw the lower end of the tumbler 39 over the ridge portion 5l and into the recess 43, there being' suiiicicnt play in the dogg- 30 to permit the movement as between the hook 43 and the upper end of the dog 45, as shown in l? S. This places the lower end of the tumbler 39 at a point below the line between the nii/'ot pins l() and lill. The upper end of the lever lll then released to permit the springr 33 to draw the lever and since the recess e3 is of sufficient depth the tumbler 39 will not sutil ieutly depress the lll-shaped bar 26 to permit the dog,- 30 to be released from its up" Qjnt position. rlhe lever 1l is permitted to b drawn '.torward as iar as it will fro, its

movement being` limited by the linl- 13 or by any other suitable stop.

m is will thus place the device in the position shown in Fig. 9, and will cause the levier end of the lever to draw on the links and 2O and thus open the throttle and release the pedal 19 and cause the tractor to start forward.

ln order to stop the tractor the upper end ot the lever ll is pulled rearwardly against the action oit the spring' 38. The tumbler 39 has been drawn into the recess 4-2 as shown in Fig. 9, and when the upper-end ot' the lever ll is pulled back the tumbler 39 rotetes on its pivot l0 and with a toggle joint action pushes the ll-shaped bar 26 down and releases the dog` 30 as shown in Fig. '10. The upper end or" the lever ll is pulled back until the latch 46 strikes the endll of the dog. which stops further rearward move ment oi the lever ll and at the same time the tumbler 39 permits the lll-shaped bar E26 to be raised by the action of the spring 29 into the position shown in wherein the lower end of the tumbler is substantiall-ir in line with the pivot pins l0 and lll and sb as to hold the lever l1 in that position not- 'vfitlistaiuling the action of the spring' lll) This pushes forward the` throttlegleverlQ and pushes the pedal 19 dovvn to neutral position, which stops the forward movement ot the tractor since the clutch releases the engine from the driving gear, that is, the differential and the bull Wheels.

For the operation ofthe lever 11 it may be provided with a handle 54; or itmay be operated by a pair oflines` that may extend around a groovedring secured tothe steering Wheelw. By my invent/ion I have rthus provided a means whereby the driving mechanism may be controlled by the operator While seated in the tractoror it may be operated at a point remote fromthetractor, as from a conveyance or an agriculturalimplement drawn byv the. tractor.

may be attached by any suitable lmeans to the spokes 56 of the steering Wheel. Thusy it either one of the lines 57 is pulled the are connected a pair of pulley blocks 61.

The lines 57 also pass over the pulley Wheels 62 supported in the blocks 61. The upper end of the lever may thus be manipulated in the manner described by a rearward pull of both of the lines 57 to cause the tractor to start and to stop. By this arrangement the tractor may be controlled by a driver located somewhat remote from the tractor.

I claim:

1. In a tractor driving mechanism, a lever connected to the throttle lever and clutch pedal ot the tractor for operating said parts of the tractor, means for limiting the movement oi the lever and preventing the return movement of the lever until the lever has been pulled back a short distance, moved forward and again moved back.

2. In a tractor driving mechanism, a pair ot lines connected to the steering Wheel ot the tractor tor operating the steering Wheel, a spring actuated means connected to the lines and to the throttle lever and the clutch pedal of the tractor, a stop tor limiting the movement ot the said means and a catch coacting With the said stop and controlled by the movement of the said means to permit return movements of the said means.

3. In a tractor driving mechanism, a lever connected to the throttle and to the pedal of the tractor, a tumbler for latching the lever, means controlled by the movement of the lever for operating the tumbler to permit the return movement ot the lever.

4. In a tractor driving mechanism, a lever connected to the throttle and the clutch ot the tractor, a latching tumbler for holding the lever in one position, a latch for limiting the movement of the lever in one di- The lines are looped over the grooved ring 55 that rection and operated by `movements of the lever to cause the operation ofthe latching tumbler to release thelever and permit return movement of the lever.

5. In a tractor driving mechanism, a lever connected to the clutch and the throttle of the tractor, a latching'tumbler tor engaging the lever, a latchand a dog tor limiting the movement ot the lever and controlling the latching tumbler.

In a tractor drivingvmechanism, a lever connected to the throttle and clutch ot the tractor, a dog tor limiting' theinovement of the lever, a tumbler connected to the lever for controlling the dog.

7. In a tractor driving mechanism, a lever connected to the throttle and clutch otthe tractor, a dog tor limiting the movement ot the lever,` a tumbler connected to the lever for controlling the dog, a latch connected to the lever for opera-ting the dog.

8. In a tractor driving mechanism, a lever connected to the throttle and the clutch ot the tractor, atumbler and a latch connected to the lever, a dog controlled by the tumbler and operated by the latch for limiting the movement ot the lever.

9. In a tractor driving mechanism, a lever connected to the throttle and the clutch of the tractor, a tumbler connected to the lever and a dog for limiting the movement of the lever, a member interconnecting the dog and the tumbler and operated by the tumbler :tor controlling the dog.

10. In a tractor driving mechanism, a lever connected to the throttle and to the clutch of the tractor, a latch and a tumbler connected to the lever, a dog coacting With the-latch to limit the movement ot the lever, a member coacting With the tumbler for limiting the movement of the lever.

11. In a tractor driving mechanism, a lever connected to the throttle and to the clutch of the tractor, a latch and a tumbler connected to the lever, the latch to limit the movement ot the lever, a member coacting with the tumbler 'for limiting the movement ot the lever and for controlling the dog.

12. In a tractor driving mechanism, a lever connected tol the throttle and clutch ot the tractor, a dog tor limiting the movement vof the lever, a tumbler connected to the lever tor controlling the dog, a pair ot lines connected to the steering mechanism of the tractor and to the lever Jfor operating the steering mechanism and the lever.

13. In a tractor driving mechanism, a lever connected to the throttle and clutch of the tractor, a dog :tor limiting the movement ot the lever, a tumbler connected to the lever for controlling the dog, a latch connected to the lever tor operating the dog, a pair ot lines connected to the steering mechanism of the tractor and to the a dog coacting with lever for operating the steering mechanism and the lever.

14. In a tractor driving mechanism, a lever connected to the throttle and the clutch of the tractor, a tumbler and a lat'ch comiected to the lever, a dog controlled by the tumbler and operated bythe latch for limiting the movement of the lever, a` pair of lines connected to the steering' mechnism of the tractor and to thelever for operating the' steering mechanism and the lever.

15. In a tractor" driving mechanism, a lever connected ,to the throttle and theV clutch of the tractor", a tumbler connected to` the lever and a dog for limiting the movement of the lever, a member intercon- .iiecting the dog and the tumbler and op erated by the tumbler for controlling the dog, a pair of lines connected to the steering mechanism of the tractor and to the lever for operating the steering mechanism and thelever.

16. In a tractor driving mechanism, av

lever connected tothe throttle and to the clutch of the tractor, a latch and a tumbler connected to the lever, a dog coacting with the latch to limit the movement of the lever, a member coacting with the tumbler for limiting the movement of the lever, a pair of lines connected tothe steering mechanism of the tractor and to the lever for operati'ng the steering mechanism and the lever.

17. In a tractor driving mechanism, a lever connected to the throttle and to the clutch o1 the tractor, a latch and a tumbler connected tothelever', a dog coacting with the latch to limit the movement ot' the lever', a member coacting with' the tumbler for limiting the movement of the lever and for controlling the dog', a pair oi lines' connected to the steering mechanism of the tractor and to the lever for operating the steering mechanism and the lever.

In testimony whereof, I havev hereunto signed my name to this specification.

VILLIAM MCELREE.

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